DK174694B1 - Stoma bag with a cover of porous material - Google Patents

Abstract

A disposable receiving bag comprising front and rear walls sealed to another along the rim and provided with an inlet opening wherein the receiving bag is provided with a cover of a porous sheet material covering one or both surfaces thereof and wherein the cover is secured to the wall or walls of the receiving bag by welding along the rim and in discrete locations over the surface of the cover shows improved performance with respect to easiness to clean without folding and tearing and improved properties with respect to venting of humidity in order to prevent skin problems.

Description

DK 174694 B1

The present invention relates to a disposable collection bag comprising a front and a back wall sealed to one another along the rim and provided with an inlet opening, wherein the collection bag is provided with a cover of a porous material covering one or both surfaces of the bag. and wherein the tire is secured to the wall of the collection bag or walls by welding in a pattern of welding seams at non-contiguous locations on the tire surface.

In the case of surgical treatment of a variety of disorders of the gastrointestinal tract or urinary tract, in many cases, the colon, ileum or ureter has been surgically exposed and the patient is left with a stoma at the abdomen, or, by nephrostomy or ureterostomy, ureter or catheter is exposed in the spinal or abdominal or abdominal region, and the body's secretions or waste materials passed through these organs are discharged through the artificial mouth or opening and collected in a collection bag usually adhered to the skin by an adhesive pad or plate with an inlet opening for receiving ostomy / ureter / catheter. Also in connection with a fistula, the patient will be dependent on a device for collecting the body material coming out of such an opening.

Ophthalmic devices are well known. Such devices may be two-piece or one-piece devices. In both types of devices, an adhesive 25 barrier unit (or base plate) is attached to the user's abdomen / back / chest. In the case of a one-piece device, a collecting device or bag is attached to the base plate. In the case of a two piece device, the adhesive barrier unit forms part of a skin plate and a collection device or bag is releasably attached to the ostomy skin plate to collect exudates from the ostomy.

When one-piece devices are used, usually the entire device, including the adhesive skin barrier retaining the device to the skin, is replaced and a fresh device is replaced. When two piece devices are used, the ostomy skin plate is left in place for up to several days and only the collecting device or bag attached to the skin plate is replaced. The fasteners for attaching an ostomy collection bag may be a per se known system which includes corresponding coupling rings or matching flanges and adhesive surfaces which engage and seal against a flange region of the skin plate.

In order to make the device discreet, nice and soft, quiet and comfortable to use, it has been suggested to provide ostomy collection bags with a cover or front layer.

British Patent Application GB 2,064,333 (Watkins) discloses an ostomy device comprising an outer cover of a nonwoven material which is joined by means of a radio frequency welded seam with an inner impervious wallet and a flange of nonwoven material.

The ostomy appliance, described in British Patent Application GB 2 064 333, is claimed to overcome problems in which the skin on which conventional flanges are attached cannot "breathe" and sweat normally. The cover of nonwoven material is joined with it. inner impervious wallet along the rim and 20 may be welded at discrete points The device described in British Patent Application GB 2 064 333 has the disadvantage that it may be difficult to clean due to the tire folding when wipe it off with a damp or wet cloth, and there is also a great risk of tearing the tire, and, if placed on the side facing the user, will only to a very limited extent help to ventilate the tire. moisture caused by sweat, which can cause irritation and skin problems.

U.S. Patent Nos. 5,455,091 and 5,470,624 (Oreglia) disclose a sheet material comprising a non-woven plastic film and a barrier film joined thereto.

30 without adhesive. The film is particularly useful for preparing ostomy bags and is claimed to combine softness, softness, ease of use, low weight and mechanical strength and is laminated by heat lamination to form an intimate joint of the films. Such sheet material has the disadvantage that, as a result of the lamination, it is often very stiff and thus can be directly uncomfortable, and if placed further on the side facing the user, the tire will not contribute to moisture ventilation.

US Patent No. 5,759,180 discloses a cover for an ostomy bag which is opaque to camouflage the waste in the ostomy bag and which is moisture resistant to prevent tire degradation when exposed to moisture, and to prevent the tire from loosen from the bag when exposed to moisture. The deck may include decorative patterns. The back of the tire preferably comprises an adhesive material which can be attached to, detached from, and reattached to an ostomy bag.

The tire is attached to virtually the entire stoma bag and at least part of the neck portion on the front of the stoma bag. The adhesive on the back of the tire can be applied over the entire back, or alternatively, the adhesive can be applied in non-contiguous places on the back. The tire disclosed in U.S. Patent No. 5,759,180 has the severe disadvantage that if the tire is placed on the side facing the user it will only contribute to moisture ventilation to a very limited extent.

Thus, there is still a need for ostomy devices that are more useful in terms of cleanliness without folding and tearing and have improved moisture ventilation properties to prevent skin problems.

The above disadvantages are overcome by the present invention as set forth below.

BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a disposable collection bag comprising a front and a back wall sealed to one another along the rim and provided with an inlet opening, wherein the collection bag is provided with a cover of a porous material covering one or both surfaces of the bag.

The invention is described in more detail with reference to the drawings, in which fig. 1 shows a proposed pattern for welding a cover of a porous material on a wall of an ostomy wrap according to the invention, FIG. 2 shows an alternative pattern for welding a cover of a porous material onto a wall of an ostomy wrap according to the invention; FIG. 3 shows a further pattern for welding a cover of a porous material on a wall of an ostomy wrap according to the invention; FIG. 4 shows yet another pattern for welding a cover of a porous material onto a wall of an ostomy wrap according to the invention; FIG. 5 is a cross-sectional view of one embodiment of a wall of a collection bag according to the invention; and FIG. 6 is a cross-sectional view of another embodiment of a wall of a collection bag according to the invention.

The invention relates to a disposable collection bag comprising a front and a back wall sealed to each other along the rim and provided with an inlet opening, wherein the collection bag is provided with a cover of a porous material covering one or both surfaces of the bag, and wherein the tire is attached to the wall of the collection bag or walls by welding in a pattern of welding seams at non-contiguous places on the surface of the tire, which is characterized in that the tire of the welding seams is integrated with the wall of the bag and that there are adjacent areas in which the layers are deformed, leaving areas where the layers are separated between the weld seams.

By holding a cover of a porous material covering one or both surfaces of the collecting bag to its wall or walls by welding in non-contiguous places on the surface of the tire, a product is maintained which retains its flexibility while retaining its resistance to 5 DK. 174694 B1 folding and tearing upon wiping and exhibits improved properties with respect to ten! moisture ventilation to prevent skin problems. This is believed to be due to a pattern of weld seams in which the two layers are integrated and adjacent areas in which the layers have been deformed, leaving between the 5 welding seams areas where the layers are separated and thus allow for better ventilating the area between the skin and the collecting bag wall. British Patent Application GB 2 064 333 is silent on the effect of the welds on the ventilation between the ostomy bag and the skin.

Suitable porous materials for use as covers for the purposes of the present invention are woven or non-woven sheet materials which are moisture resistant and can be combined with materials conventionally used in the production of ostomy devices. Such materials are preferably compatible with the materials used in the manufacture of ostomy devices and the loader 15 in a simple manner of assembly using welding, e.g. using heat, laser or high frequency welding.

Preferred materials for use as covers of the present invention are nonwoven materials of polyethylene, polypropylene or a polyester which can be formed by heat and easily welded to the wall of the bag using conventional techniques.

The ostomy collection bag according to the invention may be intended for use in connection with an ostomy skin plate (two-piece device), wherein the collection bag is provided with detachable coupling means for corresponding coupling means which are placed on the ostomy skin plate and the inlet opening is intended to flush the aperture with a hole for recording an ostomy.

The ostomy collection bag according to the invention may as an alternative be intended for direct use (one-piece device), in which case the bag is provided with an adhesive plate which holds the collection bag on the user's skin, and said bag and plate have an inlet opening for receiving a stoma.

6 DK 174694 B1

The collection bag itself, which comprises a front and a back wall sealed to one another along the rim and provided with an inlet opening, can be manufactured in an analogous manner as ostomy devices and materials conventionally used to make such.

5

The welding seams are preferably in the form of a regular pattern which allows for air flow and moisture transport along the skin.

Thus, it is preferred to provide compact weld seams where a cover 10 of a porous material is joined together to form a whole and deformed, leaving the intermediate areas elevated and acting as pads which keep the wall of the collection bag free of the skin.

The deformation can be provided during the welding of the cover layer to the wall of the bag, leaving the intermediate areas elevated relative to the wall of the bag, or alternatively a cover layer having a waffle pattern may be used, in which case the welding seams are placed in the lines of the pattern.

These weld seams can be produced in a manner similar to the welding of 20 polymer sheets to make ostomy bags.

Alternatively, a cover layer having a waffle pattern is applied and welded to the wall of the bag at the upper edge of the areas between the lines of the pattern. Such welding can be performed by laser welding or by conventional welding, preferably from the side of the wall of the bag.

An ostomy skin plate for use in connection with an ostomy dressing bag according to the invention can be made from standard materials normally used for the manufacture of disposable ostomy, wound and incontinence devices. Thus, the adhesive plate may be made from a medical barrier adhesive known in the art, such as the formulation described, for example, in U.S. Patent No. 7,367,732,5,051,259 or 5,714,225, and the skin plate is provided with coupling means corresponding to the coupling means of the collecting bag.

The coupling agents used in connection with the present invention may be any suitable coupling means known per se for coupling ostomy base plates to ostomy collection bags, e.g. a mechanical coupling such as matching coupling rings, such as the coupling rings described in WO 93/18725 or WO 94/18919, or corresponding flanges for adhesive compound of the type disclosed in U.S. Patent No. 5,800,415.

10

A preferred pattern is in the form of a waffle pattern with compact weld seams, where the two layers are joined together to form a whole, and the deformation provided during welding leaves intermediate regions acting as pads which keep the wall of the collection bag free of the skin and thus provides 15 better moisture ventilation.

The invention is now explained in more detail with reference to the drawing which shows preferred embodiments of the invention.

Reference is made to Figure 1 of the drawing which shows a proposed pattern for welding a cover of a porous material to a wall of an ostomy collection bag according to the invention. The pattern is in the form of non-continuous, short weld seams, which have regular intervals and which hold the porous layer to the wall of the collection bag. The pattern allows for ventilation along the surface of the wall of the bag, leaving in this embodiment small ridges of porous material between the weld seams.

Figure 2 shows an alternative pattern in the form of different welding seams for welding a cover of a porous material to a wall of an ostomy collection bag according to the invention.

8 DK 174694 B1

Figure 3 shows a further pattern for welding a cover of a porous material to a wall of an ostomy collection bag according to the invention. In this pattern, more compact areas are combined with larger areas to facilitate ventilation. In the more compact areas, ventilation is also ensured as a result of 5 of the non-compact welding in these areas.

Figure 4 shows a preferred pattern for welding a cover of a porous material to a wall of an ostomy collection bag according to the invention in the form of a rhombus or waffle pattern with compact weld seams, wherein the two layers are joined together to form a whole . The intermediate areas between the welding seams are deformed, thus keeping the wall of the collection bag lifted away from the skin, thereby providing better moisture ventilation from the area covered by the collection bag. When the tire is provided with a pre-formed waffle pattern, it may be sufficient to weld the tire to the wall of the bag by means of non-continuous, short weld seams spaced apart, as also shown in Figure 4.

Figure 5 shows a cross-section of an embodiment of a wall of a collecting bag according to the preferred embodiment, which clearly shows the compact 20 weld seams, where a cover of a porous material is joined together to form a whole and deformed, whereby the intermediate regions is left raised and functioning as pillows that keep the wall of the collection bag free of the skin.

The deformation can be provided during the welding of the cover layer to the wall of the bag, leaving the intermediate areas lifted from the wall of the bag, or alternatively a cover layer having a waffle pattern may be used, in which case the welding seams are placed in the lines of the pattern.

Reference is made to Figure 6, which shows another embodiment of a wall of a collection bag according to the invention, in which a cover layer with a waffle pattern is welded to the wall of the bag at the upper edge of the areas between the lines of the pattern.

9 DK 174694 B1

Such welding can be performed by laser welding or by conventional welding, preferably from the side of the wall of the bag.

Claims (6)

A disposable collecting bag comprising a front and a rear wall sealed to one another along the rim and provided with an inlet opening, wherein the collecting bag is provided with a cover of a porous material covering one or both surfaces of the bag and the tire being retained to the wall of the collection bag or walls by welding in a pattern of welding seams in non-coherent places on the surface of the tire, characterized in that the tire in the welding seams is integrated with the wall of the bag and that there are adjacent areas in which the layers are deformed, the weld seams are left in areas where the layers are separated. 15 An ostomy collection bag according to claim 1, wherein the collection bag is provided with releasable attachment means for corresponding coupling means disposed on the ostomy skin plate, and wherein the inlet opening is intended to project to a hole in an ostomy skin plate for receiving an ostomy. 20 An ostomy collection bag according to claim 1, wherein the bag is provided with an adhesive plate for retaining the collection bag for the user's skin and the plate has an inlet opening for receiving an ostomy. An ostomy collection bag according to any one of claims 1 to 3, wherein the welding is in the form of a pattern covering the surface of the tire. An ostomy collection bag according to claim 4, wherein the welding is in the form of a regular pattern. 30 An ostomy collection bag according to claim 5, wherein the welding is in the form of a waffle pattern.